摘要:
An ultraviolet ray detecting device comprises an external light shielding structure for shielding an external light from entering there, a fluorescent member disposed in the external light shielding structure and containing a fluorescent substance, the fluorescent member being excited by an ultraviolet ray to thereby generate a fluorescence ray from the fluorescent substance, a light entrance window through which a light is guided and emitted to the fluorescent member, an ultraviolet ray pass filter for extracting the ultraviolet ray from the light through the light entrance means, and a light discharging window adapted to discharge the fluorescence ray generated by the excitation fo the fluorescent member. The ultraviolet ray pass filter may be eliminated to limit the light incident angle. The light shielding structure may be composed of a box or tubular member. The fluorescence ray discharging window is eliminated and a photodiode is disposed in contact to one end of the fluorescent member. A light emitting diode is disposed to the other end of the fluorescent member for preliminarily coloring the fluorescent member.
摘要:
An optical information recording medium comprises a substrate, a first recording layer formed on the substrate, and a second recording layer formed on the first recording layer. The first recording layer comprises a first light-sensitive material that has been dissolved in a solvent that does not adversely affect the substrate. The second recording layer comprises a different light-sensitive material that has been dissolved in a solvent.
摘要:
A water-in-oil emulsion explosive comprising an aqueous solution of inorganic oxidizer, an oil, an emulsifier and hollow microspheres, and having high low-temperature detonability and storage stability can be produced without causing breakage of the hollow microspheres through particular emulsifying and kneading steps, in which emulsifying step the aqueous solution of inorganic oxider, the oil and the emulsifier are fully emulsified into a water-in-oil emulsion in an emulsifying machine having a novel structure, and in which kneading step the resulting water-in-oil emulsion is kneaded together with the hollow microspheres by means of agitating blades, said agitating blades being arranged in the kneader and carrying out concurrent by rotary motion and up and down movements.
摘要:
There is provided a thermal printer for performing a printing operation by way of heat. This printer comprises a casing, drum means provided within the casing for rolling up a paper to be printed, and a thermal head unit provided within the casing for producing a heat for the printing operation. In detail, the thermal head unit has a pair of brackets provided on the opposite sides thereof, each of the two brackets being formed at one end thereof with an elongated hole into which a fixed shaft is to be inserted, and being supported at the other end thereof on the main body of the thermal head unit, such that the thermal head unit is pivotable only in a direction perpendicular to a printing direction.
摘要:
An outboard motor comprises, in an installed or mounted state, an engine holder, an engine located to an upper portion of the engine holder, a drive shaft housing located to a lower portion of the engine holder for housing a drive shaft extending downward from the engine, and an oil pan formed to the engine holder, the oil pan being provided with a wall section to which steering brackets are secured through upper mounts. A first seal member is disposed at a mating surface portion of an upper surface of the drive shaft housing and a lower surface of the oil pan and a second seal member is disposed at a mating surface of an upper surface of the oil pan and a lower surface of the engine to thereby expose the drive shaft between the first and second seal members.
摘要:
An optical recording medium has a substrate and a recording film, which containes coloring matter, provided on the substrate. The recording film is irradiated with a laser beam passing through the substrate so that substances of the coloring matter are aggregated with each other.
摘要:
Disclosed is a method of recording, reproducing and erasing information on and from an optical recording medium. A first temperature T.sub.1 in the recording and erasing of information is set higher than a second temperature T.sub.2 in the information reproduction. Therefore, information once recorded can surely be maintained in repetitive reproduction.
摘要:
A recordable optical recording medium having a sufficiently high reflectance and modulation factor to comply with the CD specifications. The light-absorbing layer in the optical recording medium has a first cyanine dye having a light absorption band in the wavelength region of recording or reproducing light, and a second cyanine dye having a light absorption band in the wavelength range shorter than the first cyanine dye and having a smaller light absorption in the wavelength region of recording or reproducing light. The second cyanine dye is contained in the light-absorbing layer in an amount larger than the first cyanine dye.
摘要:
A light-sensitive recording medium using a photochromic material produced at a low cost, without necessity of fixing free rotation of bonds in its cis compound and removing its trans compound, is disclosed, the recording medium comprising a substrate having thereon a recording layer which contains a photochromic material capable of cis-trans isomerization upon irradiation with light, wherein not more than 50 mol % of the photochromic material has a trans configuration when the recording layer is in a color-disappearing state.
摘要:
An LB film forming device according to the present invention having a packing control device by which a barrier is moved under the control of the packing control device to compress a sample until the sample spreading over the surface of a subphase liquid provides a predetermined set surface pressure, the absorbance of the thus compressed sample is measured, and thereafter the barrier is moved under the control of the absorbance as desired so as to provide a predetermined set value of the absorbance. Such an LB film forming device may stably provide a film having predetermined film characteristics.